Paste tube



y 1934- B. c. BERRY 1,956,558

PASTE TUBE Filed July 5, 1932 Patented May 1, 1934 UNITED STATES PATENT OFFICE 1,956,558 PASTE TUBE Application July 5, 1932, Serial No. 620,810

2 Claims.

The present invention is directed to a paste tube provided with a discharge head, which is preferably formed integrally with the body of the tube and coacts with a rotatable cap which acts as a valve for opening and closing the discharge orifice in the head. The rotatable cap also serves to cleanly out 01f the discharge of the contents when moved to closing position, thereby tending to conserve the contents against waste and to maintain the tube in a clean, sightly and sanitary condition. 1

Further objects will appear from a description of the invention, in conjunction with the accompanying drawing, wherein,

Figure 1 is a side elevation of the tube of the present invention;

Fig. 2 is a sectional elevation of the head of the tube, with the parts in closing position;

Fig. 3 is a similar view, taken on line 3-3 of Fig. 2; and

Fig. 4 is a cross sectional view, taken on line 44 of Fig. 2.

The tube comprises a body preferably formed of thin pliable metal of the character customarily employed in tubes intended for the retention of pastes, cosmetics, salves, or the like. The body of the tube when distended is of cylindrical formation, and is closedat its lower end by rolling or otherwise sealing the metal walls as at 11. The body of the tube is formed in the conventional manner, and further description is deemed undome-shaped head 14. The dome-shaped head is provided at one side of its axial center with a discharge port 15 through which the contents of the tube are ejected.

The neck 13, as shown, has formed therein a partial circumferential groove or depression 16 which is preferably formed by indenting or displacing the wall of the neck around a portion of the periphery.

The head of the tube co-operates with a cup shaped cap 1'7, the side walls of which are of cylindrical form and closely embrace the cylindrical wall of the neck 13. The upper portion 18 of the cap is dome-shaped to closely embrace the domeshaped head of the tube, and the cap is provided at one side of its axial center with an aperture 19 adapted, when in discharging position, to register with the aperture 15 in the head.

The cap is further provided with an indented boss 20, or like inwardly extending protuberance,

Which is adapted to register with the groove 16 to 60 prevent removal of the cap and at the same time to permit partial rotation thereof upon the head to turn the cap from the closing position shown in Fig. 2 into the discharging position shown in Fig. 3.

In place of the groove 16 and the indentation 20 other equivalent means may be provided for permitting a limited rotation of the cap, although the arrangement shown is a highly desirable one, in that the head and neck portion of the tube is imperforate at all points save for the discharge aperture, so that there is no opportunity for escape of the contents of the tube, and at the same .time the indenting of the neck to afford the groove 16 serves to impart additional rigidity to the structure of the neck and is a simple, economical and convenient way of providing for the limited rotation of the cap.

In assembling the parts, the cap will be fitted upon the head and around the neck and afterwards indented by a suitable tool to afiordthe inward protrusion of the boss 20 into the groove 16. With the cap turned to bring the boss to one end of the groove, the discharge apertures 15-19 will be thrown out of register as in Fig. 2, to close the tube against the discharge of its contents, and with the parts readjusted to bring the boss 20 to the opposite end of the groove, the discharge apertures will be brought into register as in Fig. 3.

The spherically grooved walls of the head and cap respectively fit or nest closely together so that no apportunity will be afforded for the ingress of paste or the like between the head and the cap, and at the same time the arrangement 9:, is one which serves in the manner of a gate valve to cleanly cut ofi the column of paste or the like ejected from the tube during the closing operation, thereby preventing waste and preventing the smearing of excess material upon the exterior of the parts. 1

Although the upper formationof the head and cap in the form shown is hemi-spherical, which is the preferred form, in that it affords a maximum of resistance to crushing or bursting pressures, and at the same time permits rotation on a medial axis, nevertheless, it is not the intention to limit the invention strictly to a hemispherical formation of these parts, since an elongation thereof toward an ovate or conical llu form is within the [scope of the invention, as well as a flattening down thereof, provided, however, that the configuration is symmetrical around an axis of rotation to permit the cap to serve both as a closure and a valve for regulating the discharge of material.

The invention is one which may be very cheaply constructed, and possesses distinct advantages in that the cap remains permanently connected to the head of the tube so that it cannot become lost or displaced, and at the same time the rim and the walls of the cap will be continually reinforced and internally supported by contactwith the relatively rigid walls of the head and neck so that accidental bending or distortion of the cap will be prevented, which frequently occurs where a removable cap is employed.

I claim:

1. In a paste tube, the combination of a body adapted to be collapsed-in the discharge of the contents ,and terminating at its upper end in a cylindrical neck of deformable metal of reduced diameter as compared to the body, the neck terminating in a head symmetrically configured around a center axis extending through the neck and the head being provided on one side of said axis with a discharge port, a cap of complementary configuration surrounding the head and terminating at its inner end in a cylindrical portion surrounding the neck and the cap being provided on one side of the center axis with a discharge port adapted by rotation of the cap to be brought into and out of register with the discharge port of the head, the cylindrical neck being formed on its outer face with an imperforate groove extending circumferentially part registering with the groove in the neck to permit limited rotation of the cap to bring the discharge ports into and out of register and to prevent removal of the cap.

2. In a paste tube, the combination of a body adapted to be collapsed in the discharge of the contents and terminating at its upper end in a cylindrical neck of deformable material of reduced diameter as compared to the body, the neck terminating in a hemi-spherical head provided on one side of its vertical axis with a discharge port, a cap of complementary hemi-spherical configuration surrounding the head and terminating at its inner end in a cylindrical portion surrounding the neck, the cap being provided in its hemi-spherical portion with a discharge port adapted by rotation of the cap to be brought into and out of register with the discharge port in the head, the cylindrical neck being formed with an outwardly opening imperforate groove extending circumferentiallypart way around the neck and formed by the deformation of the material composing the neck, and the cap in its cylindrical portion being provided with an inwardly extending protuberance formed by the deformation of the material of the cap and registering with said groove to permit limited rotation of the cap to bring the discharge ports into and out of register and to prevent removal of the cap.

BERT C. BERRY. 

